Replaces the Goliath Semi Slick with enhanced puncture protection & wider centre ridge' The best thing I've ever had on a bike' says Tilmann Waldthaler, world touring cyclist Endless Edge shoulder knobshave 5-sided knobs to enhance traction for acceleration, braking & cornering in a range of conditions Safety System Puncture Protection with strong, tight & lightweight nylon fabric with reinforcing Kevlar for resistance against pinches & cuts Dura Skin sidewall reinforcement protects the casing from abrasion & cuts Robust tread provides high mileage with reduced wear & chance or punctures Folding Kevlar bead